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Math Help - Literal Equations

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    Literal Equations

    Could someone please tell me how to solve this problem?

    Solve for w: P = 2l+2w

    Thanks.
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    Quote Originally Posted by FlareHazard View Post
    Could someone please tell me how to solve this problem?

    Solve for w: P = 2l+2w

    Thanks.
    Simply write w in terms of the other variables. This can be done using basic algebraic techniques.

    I'll leave this particular problem for you to do on your own, but here's a similar example:

    \text{Solve for }p\!: y = 4px - 7z

    We want to get p on one side by itself, and all the other variables on the other side. First we may add 7z to both sides to get

    y{\color{red}\;+ 7z} = 4px - 7z{\color{red}\;+ 7z}

    \Rightarrow y + 7z = 4px\Rightarrow 4px = y + 7z

    Now we can divide by 4x to get

    \frac{4px}{\color{red}4x}=\frac{y+7z}{\color{red}4  x}

    \Rightarrow p=\frac{y+7z}{4x},\;x\neq0

    p is now in terms of x,\;y and z\text.
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